18269725436 has 6 divisors (see below), whose sum is σ = 31972019520. Its totient is φ = 9134862716.

The previous prime is 18269725429. The next prime is 18269725477. The reversal of 18269725436 is 63452796281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2283715676 + ... + 2283715683.

It is an arithmetic number, because the mean of its divisors is an integer number (5328669920).

Almost surely, 2^18269725436 is an apocalyptic number.

It is an amenable number.

18269725436 is a deficient number, since it is larger than the sum of its proper divisors (13702294084).

18269725436 is a wasteful number, since it uses less digits than its factorization.

18269725436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4567431363 (or 4567431361 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 53.

The spelling of 18269725436 in words is "eighteen billion, two hundred sixty-nine million, seven hundred twenty-five thousand, four hundred thirty-six".